Abstract
System integrity protection schemes (SIPS) are schemes that can, under potentially hazardous conditions, prevent a complete blackout of endangered parts of an electrical power system (EPS). The main objective of SIPS is to monitor the state of the power transmission network in real time and to react in emergency cases. This paper explores the use of phasor measurement unit (PMU) technology for the development of SIPS as a part of wide-area monitoring, protection, and control (WAMPAC) systems. A new SIPS development method is described using the experience from the real-time operation. The developed optimal bus-splitting scheme identifies potential actions that can eliminate or reduce power system overloads and protect the integrity of the power system. An optimal bus-splitting scheme based on a DC power flow model and PMU measurements is given as an example and is explained and tested on an IEEE 14 bus test system. Conducted simulations indicate that the described SIPS methodology supported by the PMU measurements can mitigate potential overloads of the observed network part.
Highlights
System integrity protection schemes (SIPS) are schemes that can, under potentially hazardous conditions, prevent a complete blackout of endangered parts of an electrical power system (EPS).Paper [1] highlights the need for providing research on impacts of renewables on EPSs and the corresponding protection and control strategies in order to mitigate the various negative effects.These requirements are trying to be reached with the development of smart transmission grid (STGs).An STG implies performance of automated processes based on measurement, control, protection, and telecommunication systems supported by smart technologies in order to maintain a secure power network state
This paper describes contributions in the field of congestion management and enhancement of security with the usage of SIPS supported by phasor measurement unit (PMU) measurements
SIPS based on optimal bus splitting schemes was successfully tested and verified on proposed methodology, SIPS based on optimal bus splitting schemes was successfully tested and an IEEE 14 bus test system
Summary
System integrity protection schemes (SIPS) are schemes that can, under potentially hazardous conditions, prevent a complete blackout of endangered parts of an electrical power system (EPS). The critical locations method consists of determining the buses with a large number of elements or with limited voltage values that may affect the security of the system These papers conclude that PMU technology application in SIPS requires PMU placement that allows complete system observability. The research hypothesis is defined as follows: development and use of SIPS, supported by PMU technology, can maintain the integrity of a larger part of an electric power system, improve coordination of local relay protection systems, and mitigate potential congestions in the power network. SIPS deals with congestion, thermal overload, and voltage, frequency, and angular instability problems These stated problems can be mitigated using different types of protection schemes. The optimal transmission switching protection scheme in this paper uses only bus-splitting mechanisms, actions, are described in the given literature as models for network topology changes.
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